Class: Usher::Util::Generators::URL

Inherits:
Generic
  • Object
show all
Defined in:
lib/usher/util/generate.rb

Instance Attribute Summary

Attributes inherited from Generic

#usher

Instance Method Summary collapse

Methods inherited from Generic

#generate_path_for_base_params

Constructor Details

#initialize ⇒ URL

Returns a new instance of URL.



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# File 'lib/usher/util/generate.rb', line 41

def initialize
  require File.join(File.dirname(__FILE__), 'rack-mixins')
end

Instance Method Details

#build_module! ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 84

def build_module!
  unless @generation_module
    @generation_module = Module.new
    @generation_module.module_eval <<-END_EVAL
      @@generator = nil
      def self.generator=(generator)
        @@generator = generator
      end
    END_EVAL
    @generation_module.generator = self

    @generation_module.module_eval <<-END_EVAL
      def respond_to?(method_name)
        if match = Regexp.new('^(.*?)_(path|url)$').match(method_name.to_s)
          @@generator.usher.named_routes.key?(match.group(1))
        else
          super
        end
      end
    END_EVAL


    usher.named_routes.each do |name, route|
      @generation_module.module_eval <<-END_EVAL
        def #{name}_url(name, request, params = nil)
          @@generator.generate_full(name, request, options)
        end

        def #{name}_path(name, params = nil)
          @@generator.generate(name, options)
        end
      END_EVAL
    end
  end
end

#generate(routing_lookup, params = nil) ⇒ Object

Generates a completed URL based on a route or set of optional params

set = Usher.new
route = set.add_named_route(:test_route, '/:controller/:action')
set.generator.generate(nil, {:controller => 'c', :action => 'a'}) == '/c/a' => true
set.generator.generate(:test_route, {:controller => 'c', :action => 'a'}) == '/c/a' => true
set.generator.generate(route.primary_path, {:controller => 'c', :action => 'a'}) == '/c/a' => true



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# File 'lib/usher/util/generate.rb', line 58

def generate(routing_lookup, params = nil)
  generate_path(path_for_routing_lookup(routing_lookup, params), params)
end

#generate_extra_params(params, has_question_mark) ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 149

def generate_extra_params(params, has_question_mark)
  extra_params_result = ''

  params.each do |k,v|
    case v
    when Array
      v.each do |v_part|
        extra_params_result << (has_question_mark ? '&' : has_question_mark = true && '?') << Rack::Utils.escape("#{k.to_s}[]") << '=' << Rack::Utils.escape(v_part.to_s)
      end
    else
      extra_params_result << (has_question_mark ? '&' : has_question_mark = true && '?') << Rack::Utils.escape(k.to_s) << '=' << Rack::Utils.escape(v.to_s)
    end
  end
  extra_params_result
end

#generate_full(routing_lookup, request, params = nil) ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 45

def generate_full(routing_lookup, request, params = nil)
  path = path_for_routing_lookup(routing_lookup, params)
  result = generate_start(path, request)
  result << generate_path(path, params)
end

#generate_path(path, params = nil) ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 62

def generate_path(path, params = nil)
  params = Array(params) if params.is_a?(String)
  if params.is_a?(Array)
    given_size = params.size
    extra_params = params.last.is_a?(Hash) ? params.pop : nil
    params = Hash[*path.dynamic_parts.inject([]){|a, dynamic_part| a.concat([dynamic_part.name, params.shift || raise(MissingParameterException.new("got #{given_size}, expected #{path.dynamic_parts.size} parameters"))]); a}]
    params.merge!(extra_params) if extra_params
  end

  result = Rack::Utils.uri_escape(generate_path_for_base_params(path, params))
  unless params.nil? || params.empty?
    extra_params = generate_extra_params(params, result[??])
    result << extra_params
  end
  result
end

#generate_start(path, request) ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 120

def generate_start(path, request)
  result = (path.route.generate_with && path.route.generate_with.scheme || request.scheme).dup
  result << '://'
  result << (path.route.generate_with && path.route.generate_with.host) ? path.route.generate_with.host : request.host
  port = path.route.generate_with && path.route.generate_with.port || request.port
  if result[4] == ?s
    result << ':' << port.to_s unless port == 443
  else
    result << ':' << port.to_s unless port == 80
  end
  result
end

#generation_module ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 79

def generation_module
  build_module!
  @generation_module
end

#path_for_routing_lookup(routing_lookup, params = {}) ⇒ Object 



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# File 'lib/usher/util/generate.rb', line 133

def path_for_routing_lookup(routing_lookup, params = {})
  path = case routing_lookup
  when Symbol
    route = @usher.named_routes[routing_lookup]
    raise UnrecognizedException unless route
    route.find_matching_path(params || {})
  when Route
    routing_lookup.find_matching_path(params)
  when nil
    params.is_a?(Hash) ? usher.path_for_options(params) : raise
  when Route::Path
    routing_lookup
  end
end